Advanced

Sensory stimulation promotes normalization of postural control after stroke

Magnusson, Måns LU ; Johansson, K and Johansson, Barbro LU (1994) In Stroke: a journal of cerebral circulation 25(6). p.1176-1180
Abstract
BACKGROUND AND PURPOSE: In a randomized study of hemiparetic stroke patients with a median age of 75 years, functional recovery was significantly better in those who received additional sensory stimulation (n = 38), including electrostimulation, than in control patients (n = 40) given the same physiotherapy and occupational therapy; group differences for balance, mobility, and activities of daily living were significant. The present study was designed to investigate postural control in patients who survived more than 2 years after stroke onset. METHODS: The 48 survivors (mean, 2.7 years; range, 2.0 to 3.8 years), 22 from the treatment group and 26 from the control group, were compared with 23 age-matched healthy subjects. Subjects were... (More)
BACKGROUND AND PURPOSE: In a randomized study of hemiparetic stroke patients with a median age of 75 years, functional recovery was significantly better in those who received additional sensory stimulation (n = 38), including electrostimulation, than in control patients (n = 40) given the same physiotherapy and occupational therapy; group differences for balance, mobility, and activities of daily living were significant. The present study was designed to investigate postural control in patients who survived more than 2 years after stroke onset. METHODS: The 48 survivors (mean, 2.7 years; range, 2.0 to 3.8 years), 22 from the treatment group and 26 from the control group, were compared with 23 age-matched healthy subjects. Subjects were perturbed by vibrators applied to calf muscles or with galvanic vestibular stimulation. We evaluated postural control in terms of sway variances or sway velocities and the dynamics of postural control as a feedback system using system identification with a model previously validated for human postural control. RESULTS: Significantly more patients of the treatment group than of the control group maintained stance during perturbations (P < .01). Among patients capable of maintaining stance during perturbation, the control patients were characterized by significant divergence from normal values in two of the three characteristic parameters of dynamic postural control (ie, swiftness and stiffness; P < .05) compared with the treatment subgroup or age-matched subjects. CONCLUSIONS: The course of sensory stimulation enhanced recovery of postural function, an enhancement still significant 2 years after the lesion and treatment. The differences and near normalization of characteristic parameters of dynamic postural control among treated patients suggest that improved recovery after sensory stimulation may be achieved by patients regaining normal or near normal dynamics of human postural control. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Stroke: a journal of cerebral circulation
volume
25
issue
6
pages
1176 - 1180
publisher
American Heart Association
external identifiers
  • pmid:8202976
  • scopus:0028352899
ISSN
1524-4628
language
English
LU publication?
yes
id
fff4a3c5-7c78-4543-8e6f-39e96bc9e443 (old id 1108238)
alternative location
http://stroke.ahajournals.org/cgi/content/abstract/25/6/1176
date added to LUP
2008-07-23 16:03:05
date last changed
2017-08-13 04:20:38
@article{fff4a3c5-7c78-4543-8e6f-39e96bc9e443,
  abstract     = {BACKGROUND AND PURPOSE: In a randomized study of hemiparetic stroke patients with a median age of 75 years, functional recovery was significantly better in those who received additional sensory stimulation (n = 38), including electrostimulation, than in control patients (n = 40) given the same physiotherapy and occupational therapy; group differences for balance, mobility, and activities of daily living were significant. The present study was designed to investigate postural control in patients who survived more than 2 years after stroke onset. METHODS: The 48 survivors (mean, 2.7 years; range, 2.0 to 3.8 years), 22 from the treatment group and 26 from the control group, were compared with 23 age-matched healthy subjects. Subjects were perturbed by vibrators applied to calf muscles or with galvanic vestibular stimulation. We evaluated postural control in terms of sway variances or sway velocities and the dynamics of postural control as a feedback system using system identification with a model previously validated for human postural control. RESULTS: Significantly more patients of the treatment group than of the control group maintained stance during perturbations (P &lt; .01). Among patients capable of maintaining stance during perturbation, the control patients were characterized by significant divergence from normal values in two of the three characteristic parameters of dynamic postural control (ie, swiftness and stiffness; P &lt; .05) compared with the treatment subgroup or age-matched subjects. CONCLUSIONS: The course of sensory stimulation enhanced recovery of postural function, an enhancement still significant 2 years after the lesion and treatment. The differences and near normalization of characteristic parameters of dynamic postural control among treated patients suggest that improved recovery after sensory stimulation may be achieved by patients regaining normal or near normal dynamics of human postural control.},
  author       = {Magnusson, Måns and Johansson, K and Johansson, Barbro},
  issn         = {1524-4628},
  language     = {eng},
  number       = {6},
  pages        = {1176--1180},
  publisher    = {American Heart Association},
  series       = { Stroke: a journal of cerebral circulation},
  title        = {Sensory stimulation promotes normalization of postural control after stroke},
  volume       = {25},
  year         = {1994},
}